M5U3--Welcome-公开课

Lookatthesepictures,canyoufindthedifferencesbetweentheaboveanimalsandnormalones?clonedclonedclonedclonedI.Task:readthepassageaboutcloningonpage58andanswerthefollowingquestions.1.Whatiscloningtechnology?2.Whatarepeopleworriedaboutwhenitcomestocloning?Ⅰ.ReadingAboutcloningCloningistheactofcreatingacopyofanexistingspecies(种类).Itcanbedonewithallformsoflife,includinghumanbeings.Theideaofcloningisanoldone,startingwithHansSpemanintheearly20thcentury.Hisreasearchongrowthanddifferentiation（分化）ofcellsledtohiswinningtheNobelPrizein1935.Cloningisanewtechnologywhichmanypeopleareworriedabout.MostdevelopedcountriesandeventheUNhaveplacedabanonhumancloning.Theythinkthatmoreanimalcloningshouldbedoneandmonitored(监控)beforemovingontocloninghumans.Therecouldbesomeadvantagestothecloningtechnology,Forexample,ifyouhavesomeseriousdamage,itispossibletorepairthatdamageusingyourowncellsandDNAwhichareclonedfromthehealthypartofyourbrain.Theworld'sfirstclonedmammalItwascreatedbyScottishscientists.Itcausedworldwideinterestbecauseshelooksthesameashermother,bothinappearanceandingenes.II.Picture-talkingPicture1ThefirstclonedmammalDollyandItsCreator-IanWilmutHawlongdidDollylive?Dollydiedoflungdiseaseatanearlyage.Itsexistencewasalsocontroversial(有争议的).Somepeoplebelievethatcloningcanhelpcuremanydiseasesandsavealotoflives.However,othersthinkcloningisdangerousbothtechnologicallyandethically(伦理上的).ThekitteninthepictureiscalledCC.Itsnameisfrom“Copycat”.ItwasborninDecember2002.Picture2TheresearchersinTexasproducedCCwithacelltakenfromhermotherRainbow.CCwasahealthykittenwhogrewintoalivelyaffectionate[ə'fekʃ(ə)nət]housecat.Sheisnottheexactcopyofherclone-motherbecausetheygrewupindifferentsurroundings,thoughthesharedthesamegenes.Thesefemalepigsarealsocloned.TheywerebornonChristmasDay2001.TheywereNoel,Angel,Star,JoyandMary.Picture3Althoughtheyarenotthefirstclonedpigs,theyareactuallythefirsttobeengineeredinawaythattheirorgansmoresuitablefortransplantationintohumans.Duetotheshortageofhumanorgansfortransplants,manypeoplearedyingbecausesomeoftheirorgansdonotwork.Itishopedthattheorgansfromthesepigswillbeusedinhuman’sbodies.ThenameofthefirstclonedmonkeyisANDi.Itisfrom“insertedDNA”speltbackwards.Theplayfulcoffee-colouredmonkeywasbornin2000.ThetechnologyisdifferentfromthatusedforDolly.Picture4ResearchersinOregon,theUSAcreatedthisfirstgeneticallymodifiedmonkeybyputtingageneformajellyfish,anotherspecies,intosix-day-oldmonkeyembryos(胚胎).Thepairofcalves[kɑːvz]werebornon5July1998inIshikawa,Japan.TheyweretwoyearsyoungerthanDolly,beingsecondadultanimalclonesintheworld.MoreexamplesaboutclonedanimalsThemuleinthepictureistheworld’sfirstclonedmule.Itwasbornon4May2003.HisnameisIdahoGem.In1962,thescientistGurdonfromCambridgeclonedatadpole['tædpəʊl]In1963,ChinesescientistTongDizhouclonedacarp[kɑːp],whichwas33yearsearlierthanDolly.Bornin2005inSeoulUniversityinKoreaSnoopyDoyouthinkitwouldbeagoodideatoclonehumanssomeday?Whyorwhynot?III.DebateItisagoodidea,for…reasons:1.Cloningcanhelpcuremanydiseasesandsavealotofpeople’slives.2.…3.…PartyAItisabadidea,for…reasons:1.Cloningcanleadtoethical(伦理)problems.2.…3.…PartyBIfpossible,doyouwantanotherpersontobeexactlythesameasyou?JustimagineSupposingyouarefacingyoursecondselfwholookslikeyou,talkslikeyouandthinkslikeyou,howdoyoufeel?Oneman,oneworld?FunnypicturesIfcloninggoesinawrongdirection,whatwillhappen?Adogoraneagle?Aduckoracrocodile['krɒkədaɪl]?Acockoradog?Alionorakangaroo[,kæŋgə'ruː]?Afrogoracrocodile['krɒkədaɪl]?Atortoiseorabear?Abirdoradog?Adogoraman?Whoisthis?克隆如何才能和谐？Thinkaboutwhatwe’vejustlearnttoday.Studywithoutreflectionisawasteoftime.AftertheclassIt’stimetostoptheclassforyoutolookbackinsilence.HomeworkWriteashortpassageaboutwhetheritisagoodideatoclonehumans.Todayourclasshadadiscussionaboutwhetheritisagoodideatoclonehumans.Somestudentsthinkthatitisgood,for…However,someotherstudentsthinkitisnotagoodidea,for…Inmyopinion,…